Cell Biology: Exocytosis and Lysosomes
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Questions and Answers

What is the primary function of the Golgi apparatus in relation to the endoplasmic reticulum?

  • The Golgi apparatus provides additional processing and concentration of substances already formed in the endoplasmic reticulum. (correct)
  • The Golgi apparatus synthesizes proteins that were formed in the endoplasmic reticulum.
  • The Golgi apparatus breaks down and recycles the secretions from the endoplasmic reticulum.
  • The Golgi apparatus transports proteins directly to the cell membrane, bypassing the endoplasmic reticulum.

    • What is a key role of the Golgi apparatus in the synthesis of large carbohydrate polymers?

  • The Golgi apparatus packages large carbohydrate polymers into vesicles for storage within the cell.
  • The Golgi apparatus transports large carbohydrate polymers directly to the cell membrane for secretion.
  • The Golgi apparatus breaks down large carbohydrate polymers into smaller units that can then be exported from the cell.
  • The Golgi apparatus can synthesize large carbohydrate polymers that cannot be formed in the endoplasmic reticulum. (correct)

    • What is the primary fate of the vesicles formed by the Golgi apparatus in a highly secretory cell?

  • The vesicles fuse with lysosomes to break down their contents.
  • The vesicles transport their contents to the nucleus for further processing.
  • The vesicles first diffuse to the cell membrane, then fuse with it and release their contents to the exterior by exocytosis. (correct)
  • The vesicles diffuse throughout the cell and release their contents into the cytoplasm.

    • How do the vesicles formed by the Golgi apparatus differ from the vesicles formed by the endoplasmic reticulum?

    <p>The vesicles formed by the Golgi apparatus are larger and contain more concentrated secretions.</p> Signup and view all the answers

    What is the primary role of the vesicles in transporting and concentrating the secretions from the endoplasmic reticulum?

    <p>The vesicles compact and concentrate the endoplasmic reticular secretions into highly concentrated packets.</p> Signup and view all the answers

    What is the primary mechanism by which the vesicles formed by the Golgi apparatus release their contents to the exterior of the cell?

    <p>The vesicles fuse with the cell membrane and release their contents to the exterior by the process of exocytosis.</p> Signup and view all the answers

    What is the functional relationship between the endoplasmic reticulum and the Golgi apparatus in terms of protein processing and secretion?

    <p>The endoplasmic reticulum synthesizes proteins, which are then transported to the Golgi apparatus for additional processing, concentration, and secretion.</p> Signup and view all the answers

    What is the primary role of the carbohydrate modifications that occur in the Golgi apparatus?

    <p>The carbohydrate modifications in the Golgi apparatus help target the secreted proteins to specific destinations within the cell.</p> Signup and view all the answers

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